It probably is bad practice, but I have done this in the past. As to damaging the LDO, that would depend on which LDO is fitted, and whether the manufacturer allows for this mode of operation. Check the datasheet.

How about my thought about just taking flush cutters and cutting the LED in half? That shouldn't lead to any problems? (I've done it in the past with a Digispark LED, but some time later the Digispark blew. Presumably unrelated.) This would put a large mechanical load on the printed circuit traces,...

To put that in perspective, if the LED lights at 0.1mA, it will eat a CR2032 (nominal capacity of around 200mAh) in around 80 days. For every doubling of that LED current, you half the duration the battery will last. If you remove the LED, obviously your battery will last a lot longer. That same CR2...

Andy I agree about removing the resistor, it would be my first option, as they remove very easily. I wasnt aware that the regulator drew current though its output, but I'm not surprised that it does, since its not its normal mode of operation. It very much depends on the regulator, but generally th...

Removing the power LED on the bluepill boards is relatively easy. You might also consider removing the current limiting resistor instead, if it is easier to access, or if you are feeling particularly brave, substituting it for a higher value, though this will require considerably more skill than sim...

If it is using anything other than the modes provided by STM, then it is probably bit banging the serial port rather than using the defined hardware options.... at least if I were set the challenge, that would be the method I would pursue. :D Having said that, the Arduino serial.begin() function pot...

If the objective is to save space, with the BOOT jumpers, then don't forget that pin headers and jumpers also come in 1.0mm pitch (mostly smd) as well as the more common 2.54mm (mainly through hole, but occasionally smd). They will be slightly more expensive, and more difficult to source. They are p...

Hi Ahmad. The only thing I vaguely know about bandar-e Anzali is that it is famous for its caviar, but since the nearest I've been to bandar-e Anzali is flying past it over the Caspian sea at 37,000 feet, en route to India, I could be entirely wrong about that.
Either way, welcome

I still have a 830 from the 1990s. have sinced gotten (more than) a few 830s as well, some for free. Best value for money, in my view. There are a lot of snooty remarks about those cheap 830 multimeters. I've got a couple, and other than the crappy probes, I've never had any issues with them. http:...